import java.io.; import java.util.;

public class Solution {

public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String A = sc.next();
    boolean isPalindrome = true;
    int length = A.length();
    for (int i = 0; i < length / 2; i++) {
        if (A.charAt(i) != A.charAt(length - 1 - i)) {
            isPalindrome = false;
            break;
        }
    }
    System.out.println(isPalindrome ? "Yes" : "No");
    sc.close();
}

}